- Aquinas, Thomas. Summa Theologica, 5 volumes. Christian Classics, 1981.
- Augustine. Confessions. Henry Chadwick, trans. Oxford University Press, 1998.
- Augustine. The City of God. Modern Library, 1994.
- Calvin, John. Institutes of Christian Religion. John T. McNeill, ed.; Ford Lewis Battles, trans. Westminster John Knox, 1960. Detailed overview of Christianity from its origins to the present.
- Carter, Warren. The Roman Empire and the New Testament. Nashville: Abingdon Press, 2006.
- Chadwick, Henry. The Early Church. Penguin, 1993.
- Corrigan, John, and Winthrop Hudson. Religion in America. Prentice Hall, 2003.
Overview of Christianity in the United States from 1607 to the late twentieth century. - Flannery, Austin, ed. Vatican Council II: Constitutions, Decrees, Declarations. Costello, 1996. [Vatican II documents ]
- Gonzalez, Justo. The Story of Christianity. Prince Press, 1999; originally published in two volumes by Harper SanFrancisco, 1984/85. Overview of the first five centuries of Christian history.
- Gonzalez, Justo, and Zaida Maldonado Perez. An Introduction to Christian Theology. Abingdon, 2002.Introduces theology topically (by major doctrines) from a Protestant perspective.
- Karl Rahner, Foundations of Christian Faith: An Introduction to the Idea of Christianity, trans. William V. Dych (New York: The Seabury Press, 1978) 26.
- Larson, M.A. (1977), The Story of Christian Origins.
- Laeuchli, S. (1967), “Christ and Mithra”, in Mithraism in Ostia: Mystery Religion and Christianity in the Ancient Port of Rome, Northwestern University Press, p. 88.
- Lewis, C. S. Mere Christianity. HarperSanFrancisco, 2001. A classic presentation of the “essentials” of Christian faith for non-Christians. Classified as “apologetics,” meaning that it argues for the reasonableness of Christianity.
- Luther, Martin. Martin Luther: Selections from His Writings. John Dillenberger, ed. Anchor, 1958.
- Lynch, Joseph. The Medieval Church: A Brief History. Longman, 1995. Overview of Christianity during the medieval period.
- McGrath, Alister. Christian Theology: An Introduction. Blackwell, 2001. Introduces theology topically (by major doctrines) from a Protestant perspective.
- Noll, Mark. Turning Points: Decisive Moments in the History of Christianity. Baker Academic, 2000. Brief overview of Christianity from its origins to the present.
- Placher, William. A History of Christian Theology: An Introduction. Westminster John Knox, 1983. Introduces the development of Christian theology chronologically (as it developed through history) from a Protestant perspective.
- Placher, William, ed. Readings in Christian Theology, Vol. I: From Its Beginnings to the Eve of the Reformation and Vol. 2: From the Reformation to the Present. Westminster John Knox, 1988.
- Rausch, Thomas. The College Student’s Introduction to Theology. Michael Glazier, 1993. Introduces theology topically (by major doctrines) from a Roman Catholic perspective.
- Simons, Menno. Complete Writings. Herald Press, 1956.